chore: remove redundant PR checklist template

[olantwin]

🤖 AI text below 🤖

The PR template contained only a three-item checklist, all of which are already enforced automatically by CI in .github/workflows/lint.yml:

• Commit message follows conventional commits → commit-check job
• Pre-commit checks pass (pixi run lint) → prek job
• CI checks pass → tautological (that is CI itself)

Since the checklist was the entire file, this removes .github/pull_request_template.md. GitHub falls back to a blank PR description box.

Summary by CodeRabbit

• Chores
  • Removed the pull request checklist for commit message, linting, and CI requirements.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 0a74ec80-c410-473e-9ae6-25b27f91acfc

📥 Commits

Reviewing files that changed from the base of the PR and between 00a30db and a82e4bb.

📒 Files selected for processing (1)

• .github/pull_request_template.md

💤 Files with no reviewable changes (1)

• .github/pull_request_template.md

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📝 Walkthrough

Walkthrough

The pull request template no longer includes the checklist for commit messages, pre-commit lint checks, and CI checks.

Changes

Cohort / File(s)	Summary
Pull request template .github/pull_request_template.md	Removed the checklist items for conventional commit messages, pre-commit lint checks, and CI checks.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Mergeability Score: ⚪ Minimal · up to a82e4

This change removes a redundant checklist without affecting product behavior or runtime operation; no actionable merge-blocking risk remains.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely identifies the removal of the redundant pull request checklist template.
Description check	✅ Passed	The description explains what was removed, why it was redundant, and how CI already enforces the listed checks.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/remove-pr-checklist

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[github-actions]

Physics Metrics Comparison

All configurations match reference (no significant differences)

• Configurations compared: 1
• Matching reference: 1

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About this comparison

Physics metrics are extracted from ROOT files and compared.
Default comparison uses 5% tolerance for histogram statistics
and 3σ for fit parameters.

Metrics stored in git notes: refs/notes/ci/physics-metrics/<config>